Structures Congress 2019
Dynamic Behavior and Resistance Mechanism of RC Pier Columns under Lateral Impact Loading
Publication: Structures Congress 2019: Blast, Impact Loading, and Research and Education
ABSTRACT
In the present study, the 3D elasto-plastic finite element models of prototype pier column under impact loading are established by using LS-DYNA and validated against the observations from a field impact test in literature. The effect of essential parameters including impact velocity, impact mass, axial load ratio, and impact elevation on the impact response of RC columns are also discussed in detail. Then, a novel damage assessment method based on the sectional damage factor is put forward to quantify the damage level of RC columns, and the resistance mechanism of RC columns in the impact process is explored. Results show that when the initial kinetic energy of the impactor remains constant, the different combinations of the impact mass and velocity can lead to a significant discrepancy in the damage mechanism of RC columns. The damage assessment method proposed in this study can visually describe the damage distribution along the length of RC columns. Furthermore, the system impulse in the impact process is slightly larger than the initial momentum, whereas the energy absorbed by the impacted column is about 90 percent of the initial kinetic energy.
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ACKNOWLEDGMENTS
The authors gratefully acknowledge the financial support provided by the National Science Foundation of China under Grant No. 51438010.
REFERENCES
Biggs, J.M., (1964). “Introduction to structural dynamics.” McGraw-Hill College.
Cai, J., Ye, J.-B., Chen, Q.-J., Liu, X. & Wang, Y.-Q. (2018). Dynamic behaviour of axially-loaded rc columns under horizontal impact loading. Engineering Structures, 168, 684-697.
Gholipour, G., Zhang, C. & Mousavi, A.A. (2018). Effects of axial load on nonlinear response of rc columns subjected to lateral impact load: Ship-pier collision. Engineering Failure Analysis, 91, 397-418.
Halquist, J. (2007). Ls-dyna keyword user’s manual version 971. Livermore Software Technology Corporation, Livermore, CA.
Jones, N. (2012). Structural impact: Cambridge university press.
Kishi, N. & Bhatti, A.Q. (2010). An equivalent fracture energy concept for nonlinear dynamic response analysis of prototype rc girders subjected to falling-weight impact loading. International Journal of Impact Engineering, 37 (1), 103-113.
Loedolff, M.J. (1989). The behaviour of reinforced concrete cantilever columns under lateral impact load. Stellenbosch: Stellenbosch University.
Remennikov, A. & Kaewunruen, S. (2006). Impact resistance of reinforced concrete columns: Experimental studies and design considerations. Faculty of Engineering.
Sharma, H., Hurlebaus, S. & Gardoni, P. (2012). Performance-based response evaluation of reinforced concrete columns subject to vehicle impact. International Journal of Impact Engineering, 43, 52-62.
Shi, Y.C., Hao, H. & Li, Z.X. (2008). Numerical derivation of pressure-impulse diagrams for prediction of rc column damage to blast loads. International Journal of Impact Engineering, 35 (11), 1213-1227.
Thilakarathna, H.M.I. (2010). Vulnerability assessment of reinforced concrete columns subjected to vehicular impacts. Queensland University of Technology.
Information & Authors
Information
Published In
Structures Congress 2019: Blast, Impact Loading, and Research and Education
Pages: 12 - 21
Editor: James Gregory Soules, McDermott International
ISBN (Online): 978-0-7844-8224-7
Copyright
© 2019 American Society of Civil Engineers.
History
Published online: Apr 22, 2019
Published in print: Apr 22, 2019
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